Means for truing the spring-rolls of leather-splitting machines.



PATENTED MAY 1, 1906. W. D. QUIGLEY & J. H. GAY. MEANS FOR TRUING THE SPRING ROLLS OP LEATHER SPLITTING MACHINES APPLICATION FILED JAN. 18, 1905,

TED STATES PATENT onrnca WILLIAM DAVID QUIGLEY AND JOSEPH 1 1. GAY, OF NEIVARK, NEW

JERSEY.

MEANS FOR TRUING THE SPRING-ROLLS OF LEATHER-SPLITTING MACHINES.

Specification of Letters Patent.

Patented May 1, 1906.

Application filed January 18, 1905. Serial No. 241.593.

To a 1141,0111 if 'nmq concern:

Be it known that we, WILLIAM DAVID QUIG- LEY and JosEPn H. GAY, of Newark, Essex county, New Jersey, have invented a new and useful Improvement in Means for Truing the Spring-Rolls of Leather-Splitting Machines, of which the following is a specification.

The invention relates to means for truing the spring-roll of a leather-splitting machine.

The invention consists in a spring-roll having an elastic or yiel ing surface and means for truing said surface at a plurality of points; also, in a blade secured to a fixed support with its edge bearing upon the yielding surface of the roll and provided with a plurality of adj Listing-screws, whereby said edge may be forced against theroll-surface at many different points along the length of said roll.

In the accompanying drawings, Figure 1 is a plan view of our device, the gage-roll and knife of the machine being omitted. Fig. 2 is a vertical section, on a larger scale than Fig. 1, showing the gage-roll, knife, and lower roll in place.

Similar letters of reference indicate like parts.

A is the spring-roll, B is the gage-roll, C the bed-roll, and D the splitting-knife, of a leather-splitting machine, these parts being arranged in the ordinary and well-known way. The spring-roll A is of the type which has an elastic or yielding surface and may be constructed. as set forth in United States Patent No. 798,072, granted to us August 29, 1905. The roll is there shown as formed of a plurality of wire spirals E F, 620., having a substantially smooth exterior surface and supported on a polygonal central rod G.

H is a table which may be a part of the framing of the machine and which serves as a support for the blade I, preferably of steel, which is secured to the upper surface of said table by screws J. The edge K of blade I is made suitably concave to fit against the surface of the spring-roll A. Below the blade I the table is cut away, as shown at L. Passing through the blade and entering threaded openings in the table below are a plurality of screws M, each having a head portion N, countersunk in the blade, and a squared upper projection O, to which a wrench may be applied for turning. The length of the blade I is to be substantially equal to the length of the roll, so that the edge K may bear along its entire length upon said roll-surface. The blade is to be sufficiently flexible to permit the adjusting-screws M or any of them to press it against the roll-surface.

The operation of the device is as follows: In case the roll-surface is out of true at any point, so that at that point there is more or less undue outward projection, the screwN nearest said projecting portion is turned inward, so as to press the blade at that point against the projecting portion, and thus to move said projecting portion inward until the projection disappears. This is done wherever such projections are found, and the yielding roll-surface is thus adjusted and held true.

The number of :uljusting-screws N is immaterial so long as enough of them are provided to effectively true the roll-surface in the manner described.

\Ve claim- 1. In a leather-splitting machine, a springroll having an elastic or yielding surface and means external to said roll for truing said surface at a plurality of points.

2. In a leather-splitting machine, a springroll having an elastic or yielding surface and means for truing said surface by subjecting same to regulated pressure at a plurality of points.

3. In a leather-splitting machine, a springroll having an elastic or yielding surface, a blade parallel to the axis of said roll and having its edge bearing on said surface, and means for regulating the pressure of said e'lge against said surface at a plurality of points.

4. In a leather-splitting machine, a springroll having an elastic or yielding surface, a support, a flexible blade disposed parallel to the axis of said roll and secured to said support and having its edge bearing upon the surface of said roll, and means for pressing said edge against said surface at a plurality of points.

5. In a leather-splitting machine, a spring roll having an elastic or yielding surface, a bla e parallel to the axis of said roll, and a plurality of adjusting devices bearing upon the said blade and operating independently to press the edge thereof against the surface of said roll.

6. In a leather-splitting machine, a spring- In testimony whereof we have signed our roll having an elastic 0r yielding surface, a names to this specification in the presence of [0 support, a flexible blade disposed on said two subscribing witnesses.

support parallel to the axis of said roll, and a WILLIAM DAVID QUIGLEY 5 plurality of screws in said support bearing JOSEPH H. GAY.

on said blade and operating independently to Witnesses:

press the edge of said blade against the surface PARK BENJAMIN, Jr.,

of said roll. I WM. H. SIEGMAN. 

